I'm sorry, but this is absolutely not true. Cloud and Corrin are very much not ballot related characters. I don't know where you've seen that Cloud won in US and Corrin in Japan, but nothing like that was ever confirmed by nintendo so you're either assuming stuff or just making things up. Out of everything you said, only Bayonetta's win in Europe was confirmed by Sakurai.Cloud wasn't Nomura's decision to make, sure he helped on the game of Final fantasy 7, but he does not own it. Nintendo didn't even ask for Sora during Wii U / 3DS because he wasn't voted in.
Cloud got in because Nintendo held three voting polls, in Japan, the US and Europe. The US voted in Cloud, Japan voted in Corrine, and Europe voted in Bayonetta.
It was a rare event that Nintendo actually decided to put in characters that the fans wanted.
And it probably won't ever happen again.